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2. Timeline of the evolutionary history of life - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_the...

   The earliest evidence for life on Earth includes: 3.8 billion-year-old biogenic hematite in a banded iron formation of the Nuvvuagittuq Greenstone Belt in Canada; [30] graphite in 3.7 billion-year-old metasedimentary rocks in western Greenland; [31] and microbial mat fossils in 3.48 billion-year-old sandstone in Western Australia.

3. History of life - Wikipedia

   en.wikipedia.org/wiki/History_of_life

   The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...

4. Timeline of human evolution - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_human_evolution

   Stone tools found at the Shangchen site in China and dated to 2.12 million years ago are considered the earliest known evidence of hominins outside Africa, surpassing Dmanisi hominins found in Georgia by 300,000 years, although whether these hominins were an early species in the genus Homo or another hominin species is unknown. [37

5. All Life on Earth Comes From One Single Ancestor—and ... - AOL

   www.aol.com/lifestyle/life-earth-comes-one...

   While the Cambrian Explosion kickstarted complex life in a major way some 530 million years, the true timeline of life on Earth is much longer. For years, scientists have estimated that LUCA ...

6. All Life on Earth Might Have Started From Lightning ... - AOL

   www.aol.com/lifestyle/life-earth-might-started...

   This is extremely important, as Earth’s early atmosphere would’ve been made up of nonreactive N 2 molecules. Lightning was the essential piece needed to create the ingredients essential for ...

7. Earliest known life forms - Wikipedia

   en.wikipedia.org/wiki/Earliest_known_life_forms

   Earth is the only place in the universe known to harbor life, where it exists in myriad environments. [8] [9] The origin of life on Earth was at least 3.5 billion years ago, possibly as early as 3.8-4.1 billion years ago. [2] [3] [4] Since its emergence, life has persisted in several geological environments.

8. List of years - Wikipedia

   en.wikipedia.org/wiki/List_of_years

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9. Timeline of natural history - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_natural_history

   Basin Groups Era begins on Earth. c. 4,450 Ma – 100 million years after the Moon formed, the first lunar crust, formed of lunar anorthosite, differentiates from lower magmas. The earliest Earth crust probably forms similarly out of similar material. On Earth the pluvial period starts, in which the Earth's crust cools enough to let oceans form.